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The application of time-frequency analysis to the air-coupled ultrasonic testing of concrete
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UNSPECIFIED (2006) The application of time-frequency analysis to the air-coupled ultrasonic testing of concrete. IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL, 53 (4). pp. 768-776. ISSN 0885-3010.
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Abstract
Air-coupled ultrasound has been used for the nondestructive evaluation of concrete, using broad bandwidth electrostatic transducers and chirp excitation. This paper investigates the benefits of using time-frequency analysis in such situations, for both waveform retrieval and imaging in the presence of low signal levels. The use of the short-term Fourier transform, the Wavelet transform, and the Wigner-Ville distribution all are considered, in which accurate tracking of the ultrasonic chirp signals is demonstrated. The Hough transform then is applied as a filter. An image of a steel reinforcement bar in concrete has been produced to illustrate this approach.
Item Type: | Journal Article | ||||
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Subjects: | T Technology > TA Engineering (General). Civil engineering (General) T Technology > TK Electrical engineering. Electronics Nuclear engineering |
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Journal or Publication Title: | IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL | ||||
Publisher: | IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC | ||||
ISSN: | 0885-3010 | ||||
Official Date: | April 2006 | ||||
Dates: |
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Volume: | 53 | ||||
Number: | 4 | ||||
Number of Pages: | 9 | ||||
Page Range: | pp. 768-776 | ||||
Publication Status: | Published |
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